Wrench



P. PASQUARIELLO.

WRENCH.

APPLICATION FILED NOV. 28.1919- 1,332,470. Patented Mar. 2, 1920.

UNTED STATES FATE- FFE.

PASQUALE PASQUAEIELL, OF HAMDEN, CONNECTICUT.

WRENCH.

Application filed November 28, 1919.

To all whom it majz/ concern.'

Be it known `that l, PASQUALE PASQUA.- MELLO, a. subject of the King of Italy, residing at Hamden, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Wrenches; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in v Figure 1. A face view of a wrench constructed in accordance with my invention, the handle broken away and one end of the operating screw broken away.

Fig. 2. A side view partly in elevation and partly in section .of the same, illustrating the friction rollers.

Fig. 3. A side view also partly in section illustrating means for connecting the plates together and mounting the right and left hand operating screw.

Fig. 4. A transverse central sectional view.

Fig. 5. A perspective view of one of a pair of jaws detached.

Fig. 6. A perspective view of a corresponding jaw detached.

This invention relates to an improvement in wrenches and particularly to the type commonly known as ratchet-wrenches, in that when the handle is moved in one direction, the jaws which grip the work will be moved and when the handle is moved in the opposite direction it will turn independently of the jaws and more particularly to wrenches in which the jaws are operated by right and left hand screws, the object of the invention being to provide a construction in which the jaws may be conveniently operated by a key and to provide spring-friction means by which the jaws may be turned in one direction by the movement of the handle and will remain stationary on the reverse movement of the handle. The invention consists in the construction as hereinafter described and particularly recited in the claims.

1n carrying out my invention I employ a ring-like head 10 formed with a socket 11 to which a handle 12 may be connected. In opposite sides of the head, screws 12 and 13 are mounted and adapted to enter annular gro-ovesl/i in a plate 15 or a groove 16 .in a

Specification of Letters Patent.

Patented Mar. 2, 1920.

Serial No. 341,114.

corresponding plate 17. These plates 15 and 17 are spaced apart by blocks 18 and 19 through which connecting bolts 20 and 21 extend. The bolt 21 has a head 22 located in a groove 23 in the plate 15, the bolt passing through the plate 17 where it receives a nut 24 by which the plates are connected together; the bolt 20 has a corresponding head located in a groove 25 in the plate 17 and a nut 26 is applied to the end of the screw 20. -A right and left hand screw 27 is mounted in the head 22 in which it is held by a screw `28, the end of which enters a groove 29 in the center of the screw 27 and one end of the screw 27 is formed with a socket 30 to receive a. key by which the screw may be turned. A corresponding screw 31 is mounted in the head on the end of the screw 20. Between the plates 15 and 17 are eccentric friction rollers 32 and 33 and these rollers set over hollow studs 34 having heads 35 to enter recesses 36 formed for them in the plate 17, the open ends of the studs being closed by screw-plugs 37 and preferably I locate a spring-washer 38 between the plug and the stud. Between the studs and rollers are springs 39, one end 10 being fixed inv al slot 41 in the stud and the other end 4:2 being fiXed in a slot 13 in the eccentric roller, the springs tending to turn the rollers outward against the inner face of the head 10 which may be roughened if desired. Mounted on each of the right and left hand screws are two aws 111 and 45 each formed on opposite sides with longitudinal grooves 16 and 17 to enter undercut channels 18 in the plates which, it will here be mentioned, are each formed with a central opening 19. These jaws may have flat faces 50 and 51 or notched faces 52 and 58 and they may be reversed in position and each is formed with an outwardly projecting lug 541, screw threaded for engagement with the right and left hand screws. The plates 15 and 17 are connected together, as described, with the cam rollers iiXed between them and the plates are then located in the head 10 in which they are held by the screws 12 and 13 which enter the grooves 14: or 16 corresponding to the direction in which the plates are entered into the head, this being immaterial. The right and left hand screws are then connected with the heads of the bolts 20 and 21 and the screws engaged with the opposite ends of the jaws, the jaws being adjusted by turning the screws with a key. T he wrench is operated in the usual way of operating a ratchet wrench, that is, when the jaws are adjusted upon the work to be turned or held, the handle 12 maj7 be moved in one direction to turn the jaws or moved in the opposite direction to turn independently of the jaws. It will be understood that to positively move the work in one direction, the wrench will be placed one side up or to positively move in the opposite direction, it will he reversed. The spring-cams described form a positive connection and the use of a pawl andf a ratchet commonly employed in wrenches for this purpose is avoided.

I claim:

1. A. wrench comprising a circular head7 two plates adapted to he connected with the said headl butfree for rotationtherein, said plates connected together with their inner faces separated from each other, springeccentric rollers arranged between said plates and adapted to grip the inner face of the said head, aV right and left hand` screw mounted in each of sa-id plates, said screws formed at one end' with a key socket anda pair of jaws mounted on each of said screws.

2. wrench comprising a ring-like head provided with a handle, two plates connected together but spaced apart, said plates mounted in said head and adapted to turn therein, right and left hand screws mounted in said plates, a pair of jaws mounted on each of said screws, a stud mounted in said plates, an eccentric roller surrounding said studs, and a springA having its ends connected with said stud and with said roller and adapted to turn the rollers outward against the inner face of the head when the head is moved in one direction and rides free thereonwl'ien moved.l in the opposite direction.

In testimony whereof, I have signed this specification inv the presence of two subscribing witnesses.

PASQUALE PASQUARELLO.

Witnesses:

FREDERIC C. EARLE, J. HAROLD FLYNN.k 

